NEC 430 Review, ELAP 1032 Spring

(Figure 230.132) Refer to the nameplate and information shown in Figure 230.132. The smallest BC conductors permitted are ___ AWG.

(( 10 ))

((Heaters are installed in motor starters to protect ___. ((#1.))the motor against overload.) ((#2.)) the branch circuit conductors against overload. ((#3.) the motor against short circuits and ground faults.)

( I & II only )

(Figure 230.251) For the installation in Figure 230.251, the minimum size (standard amp rating), Square D safety switch required to hold DETD fuses is rated at ___ amps. A switch with the lowest permitted voltage rating is used.

(( 100 ))

(Figure 230.115) Refer to the motor nameplate shown in Figure 230.115. The smallest branch circuit conductors that can be installed between the 2-pole circuit breaker in the 120/240-volt, 3Ø, 4-wire panelboard and the motor are ___ AWG.

(( 12 ))

(Scenario 230-27) Motor Nameplate Information: 3 hp 208-V 1Ø Branch Circuit Supply: 2-pole breaker in a 120/208-V, 3-ph, 4-W panel. ( For Scenario 230-27, the smallest circuit conductors permitted are ___ AWG. )

(( 12 ))

(Figure 230.230) Refer to the information shown in Figure 230.230. The largest 3-pole breaker you can install in Panel LA is a ___ amp.

(( 125 ))

(Figure 230.122) Refer to the nameplate shown in Figure 230.122. The branch circuit for the motor is supplied from a 480/277-volt, 3Ø, 4-wire panelboard. The minimum size branch circuit conductors for the motor are ___ AWG.

(( 14 ))

(Figure 230.224) Using the information shown in Figure 230.224, the smallest circuit conductors that can be installed are ___ AWG.

(( 14 ))

Motor Nameplate Information: 115/230-V 1Ø 1 hp Supply: 1-pole breaker in a 120/240-V, 1-ph, 3-W panelMinimum size circuit conductors are ___ AWG.

(( 14 ))

Motor Nameplate Information: 115/230-V 1Ø 1 hp Supply: 2-pole breaker in a 120/240-V, 1-ph, 3-W panelMinimum size circuit conductors are ___ AWG.

(( 14 ))

Motor Nameplate Information: 208-230/460-V 3Ø 5 hp Supply: 3-pole breaker in a 277/480-V, 3-ph, 4-W panelMinimum size circuit conductors are ___ AWG.

(( 14 ))

((Figure 230.271)) (Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit. The small wireway is located near the motor location.Refer to the drawing shown below to answer questions that refer to this figure.) (Refer to Figure 230.271.) (The largest permitted breaker that can be installed in the panel for Motor 4 is ___ A.)

(( 30 ))

((Figure 230.261)) Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure. (Refer to Figure 230.261.) ( The largest permitted breaker that can be installed in the panel for Motor 2 is ___ A.)

(( 40 ))

(Figure 230.127) Refer to the nameplate shown in Figure 230.127. The branch circuit for the motor is supplied from a 120/240-volt, 3Ø, 4-wire panelboard. The maximum size motor branch circuit time-delay fuses that can be installed in a safety switch are ___ A.

(( 40 ))

A 1 hp, 115/230-V, 1Ø motor circuit is fed from a single-pole breaker in a 120/240-V, 1-ph, 3-W panel. The maximum permitted rating of an ITCB is ___ A.

(( 40 ))

(Motor Nameplate Information: ) 115/230-V 1Ø 1 hp Supply: 1-pole breaker in a 120/240-V, 1-ph, 3-W panelThe maximum size nontime-delay fuses permitted are ___ A.

(( 50 ))

(Figure 230.261) ((Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure.)) (Refer to Figure 230.261. ) (The largest permitted breaker that can be installed in the panel for Motor 1 is ___ A.)

(( 70 ))

(Figure 230.225) Using the information shown in Figure 230.225 and 430.52(C)(1) Exc 1, nontime-delay fuses with the maximum permitted rating were installed in the disconnecting means for the motor. Given this information and that the smallest permitted circuit conductors are used, the minimum size EGC permitted is ___ AWG.

(( 8 ))

(Figure 230.251) For the installation in Figure 230.251, the smallest EGC permitted with nontime-delay fuses is ___ AWG. 430.52(C)(1) Exc 1 was used to determine the largest permitted fuses.

(( 8 ))

When sizing conductors for a DC motor, ___ FLA is used.

(( Table 430.247 ))

If an overload in a motor branch circuit persists for a long enough period of time, it can cause damage to the ___.

(( both a and b ))

(Figure 230.261) ((Wire connected to the motor must have the correct ampacity according to the 75° column. However, inside the conduit between the panel and the wireway ampacity corrections are made, as usual, in the 90° column. The specifications require that separate equipment grounding conductors be installed in each raceway. The engineer who wrote the specs means that a metal raceway can't be used as the only EGC. But remember that only one EGC must be installed in each conduit.Refer to the drawing shown below to answer questions that refer to this figure.)) ( Refer to Figure 230.261.) ( The smallest circuit conductors that can be installed between the wireway and the safety switch for Motor #2 are ___ AWG.)

(( none of these ))